narcissus_nums=()
for num in {100..999}; do
 hundreds=$(( num / 100 ))
    tens=$(( (num % 100) / 10 ))
    units=$(( num % 10 ))
cube_sum=$(( hundreds ** 3 + tens ** 3 + units ** 3 ))
if [ $cube_sum -eq $num ]; then
        narcissus_nums+=($num)
    fi
done
IFS=, && echo "${narcissus_nums[*]}"



